How many perimeters are established in major incidents?

In major incidents, the establishment of three distinct perimeters is crucial for effective incident management. The first perimeter, often referred to as the outer or initial perimeter, serves to secure the area and control access for emergency responders and the public. It is essential for maintaining safety and ensuring that bystanders are kept at a safe distance from potential hazards.

The second perimeter, known as the inner perimeter, is typically designated for use by law enforcement and other emergency personnel actively involved in the incident response. This area may encompass the immediate vicinity of the threat or emergency, providing a secure space for responders to operate without interference.

The third perimeter is often established to facilitate a staging area for resources and personnel, allowing for organized and strategic management of additional units responding to the incident. This staging area also aids in the coordination of resources and can serve as an assembly point for command staff.

Together, these three perimeters help to ensure safety, effective communication, and a well-structured response to major incidents, allowing agencies to manage the situation with greater efficiency and effectiveness.